之前在写商品详情页时,需要写一个数字加减框,如下图
因为自己嫌麻烦,就去看其他网站是怎么写的,想直接拿来用,后来看来看去觉得写得很麻烦,
于是决定自己写,附上HTML+CSS+JS代码,一条龙一站式贴心服务2333
HTML
<ul class="btn-numbox"> <li><span class="number">数量</span></li> <li> <ul class="count"> <li><span id="num-jian" class="num-jian">-</span></li> <li><input type="text" class="input-num" id="input-num" value="0" /></li> <li><span id="num-jia" class="num-jia">+</span></li> </ul> </li> <li><span class="kucun">(库存:54)</span></li> </ul>
CSS
* { margin: 0; padding: 0; border: 0; outline: 0 } ul, li { list-style: none; } a { text-decoration: none; } a:hover { cursor: pointer; text-decoration: none; } a:link { text-decoration: none; } img { vertical-align: middle; } .btn-numbox { overflow: hidden; margin-top: 20px; } .btn-numbox li { float: left; } .btn-numbox li .number, .kucun { display: inline-block; font-size: 12px; color: #808080; vertical-align: sub; } .btn-numbox .count { overflow: hidden; margin: 0 16px 0 -20px; } .btn-numbox .count .num-jian, .input-num, .num-jia { display: inline-block; width: 28px; height: 28px; line-height: 28px; text-align: center; font-size: 18px; color: #999; cursor: pointer; border: 1px solid #e6e6e6; } .btn-numbox .count .input-num { width: 58px; height: 26px; color: #333; border-left: 0; border-right: 0; }
JS
var num_jia = document.getElementById("num-jia"); var num_jian = document.getElementById("num-jian"); var input_num = document.getElementById("input-num"); num_jia.onclick = function() { input_num.value = parseInt(input_num.value) + 1; } num_jian.onclick = function() { if(input_num.value <= 0) { input_num.value = 0; } else { input_num.value = parseInt(input_num.value) - 1; } }
嫌复制代码麻烦的小伙伴也可以到我的github下载:https://github.com/tujingyu/car-number-box
注:如果你在跟后台同事对接口的时候,遇到点击加减按钮,值无法传到后台的情况,可以改成下面这种方式
//数字加减框 $("body").on("click",".num-jian",function (m) { var obj = $(this).closest("ul").find(".input-num"); if (obj.val() <= 0) { obj.val(0); } else { obj.val(parseInt(obj.val()) - 1); } obj.change(); }); $("body").on("click",".num-jia",function (m) { var obj = $(this).closest("ul").find(".input-num"); obj.val(parseInt(obj.val()) + 1); obj.change(); });
有需要的朋友可以领取支付宝到店红包,能省一点是一点